This is just kind of scary on multiple levels, the least being that dry erase markers are one of the most ordinary, non-suspicious objects we can think of. Anyone walking around a hotel corridor with a screwdriver and a circuit board is likely to raise a few red flags, but a dry erase marker? Who would stop to question someone on the grounds that their writing utensil 'looks funny.' Um, nobody.
Another tech blog, ExtremeTech, sums up the frightening simplicity of the dry erase marker device:
"By any reasonable standard, Brocious didn’t “hack” the locks at all. He built a digital parrot that could read an unencrypted code and transmit it back to the door. [With Jakubowski's design,] nothing comes out of the marker, the tip looks normal, and there’s no wire. Touch the tip of the marker to the door port, and voila, it unlocks."
Lock your doors, hotel geeks, and don't even think of removing the deadbolt until room service arrives and you can smell the bacon wafting through the door!
[Photo: HotelChatter; inset, Matthew Jakubowski]